Angular SPI Notes

Local Storage to hold the token

to persist the token, local storage is used.

Parent-Child Bindings

@Input - to pass values from parent to child

@Output - to make values from the child available to the parent (event callback)

Typescript tips

Shorthand for an if statement 

>!!variable 

is equivalent to if variable == null then false else true  (like ?? in C#)

Error Handling

Server side - Globally handle exceptions and return as 500 errors.  This saves having to add try catches around every controller method.

Client side - Write an error.interceptor that can bee added as a provider.  This will intercept the http request and emits error notifications.